遵從準則
暴露您view中所有影響可見外觀的屬性或者行為。
- 通過XML添加和設定樣式
- 通過元素的屬性來控制其外觀和行為,支援和重要事件交流的事件監聽器
詳細步驟見:Android 自訂View步驟
樣子
支援的樣式
可以通過XML定義影響外邊和行為的屬性如下
邊框圓角值,邊框顏色,分割線顏色,邊框寬度,密碼長度,密碼大小,密碼顏色
<declare-styleable name="PasswordInputView"><attr name="borderWidth" format="dimension"/><attr name="borderColor" format="color"/><attr name="borderRadius" format="dimension"/><attr name="passwordLength" format="integer"/><attr name="passwordWidth" format="dimension"/><attr name="passwordColor" format="color"/><attr name="passwordRadius" format="dimension"/></declare-styleable>
同時支援原來EditText功能,可以獲得資料值,數字鍵台設定等
繪製邏輯的主要代碼
protected void onDraw(Canvas canvas) {int width = getWidth();int height = getHeight();// 外邊框RectF rect = new RectF(0, 0, width, height);borderPaint.setColor(borderColor);canvas.drawRoundRect(rect, borderRadius, borderRadius, borderPaint);// 內容區RectF rectIn = new RectF(rect.left + defaultContMargin, rect.top + defaultContMargin,rect.right - defaultContMargin, rect.bottom - defaultContMargin);borderPaint.setColor(Color.WHITE);canvas.drawRoundRect(rectIn, borderRadius, borderRadius, borderPaint);// 分割線borderPaint.setColor(borderColor);borderPaint.setStrokeWidth(defaultSplitLineWidth);for (int i = 1; i < passwordLength; i++) {float x = width * i / passwordLength;canvas.drawLine(x, 0, x, height, borderPaint);}// 密碼float cx, cy = height/ 2;float half = width / passwordLength / 2;for(int i = 0; i < textLength; i++) {cx = width * i / passwordLength + half;canvas.drawCircle(cx, cy, passwordWidth, passwordPaint);}}
完整代碼下載
http://files.cnblogs.com/purediy/PasswordInputView.rar